The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
A target, per the source: the collider is "expected to become operational in the early to mid-2030s".
CERN Courier's own headline, 'EIC steps towards construction,' published March 2026, tracks the same progress toward the collider's targeted early-to-mid-2030s completion reflected in the pin's stored December 2033 date.
The U.S. Department of Energy's own headline reports the Electron-Ion Collider achieving 'Critical Decision 1 Approval,' a project milestone consistent with the pin's stored construction timeline toward an early-to-mid-2030s operational date.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
